Document Type : Original Research Paper


Geology Department, Faculty of Science, Cairo University, Egypt


The Precambrian rock assemblages of Umm Tawat area in the North Eastern Desert of Egypt have a distinctive ENE-trending exposure of Hammamat sediments (HS) between the Gebel Gattar granitic pluton and the volcanoclastic succession of Gebel El Dokhan. The present work applies the Landsat-8 data and image processing techniques such as spectral signature, principal component analysis, decorrelation stretch, and band ratios to map the various Precambrian rock units and the lithofacies of the HS and their geological contacts. The recognized mappable units of this assemblage are fully identified by their spectral signature, field verification, lineament analysis, and petrographic description. The resultant high-resolution lithological map based on the maximum likelihood algorithm demonstrates ten fully discriminated mappable units of younger granitoid and HS lithofacies units besides the Dokhan volcanics and metagabro-diorite rock units. The identified five HS lithofacies units are brownish gray conglomerate and sandstone HSf1, a green conglomerate with dominant volcanic fragments HSf2, fine-grained sediments of graywacke and silty-mudstone HSf3, interbedded conglomerates and siltstone with uranium enrichments related to the intrusive contact HSf4, and thermally metamorphosed pelitic sediments HSf5. Remote sensing techniques have been applied for the first time to reveal detailed facies variation of the Hammamat sediments of Umm Tawat. Finally, the results aforementioned above are imported to the Arc GIS database to update the geologic map with precise rock unit boundaries.


[1]. Crosta, A. P. and Rabelo, A. (1993). Assessing of Landsat TM for hydrothermal alteration mapping in central-western Brazil. Proceedings of Ninth Thematic conference geologic remote sensing Pasadinea, California, USA. 1053-61.
[2]. Shokry, M.M., Sadek, M.F., Osman, A.F., and El Kalioubi, B.A. (2021). Precambrian basement rocks of Wadi-Khuda-Shut area, South Eastern Desert of Egypt: Geology and remote sensing analysis. Egyptian Journal of Remote Sensing and Space Science. 24 (1): 59–75.
[3]. Hassan, S.M., El kazzaz, Y.A., Taha, M.M.N., and Mohammad, A.T. (2017). Late Neoproterozoic basement rocks of Meatiq area, Central Eastern Desert, Egypt: Petrography and remote sensing characterizations. Journal of African Earth Sciences. 131:14–31.
[4]. Kumar, C., Shetty, A., Raval, S., Sharma, R., and Ray, P.K.C. (2015). Lithological Discrimination and Mapping using.
[5]. Pandey, P. and Sharma, L.N. (2019). Image Processing Techniques Applied to Satellite Data for Extracting Lineaments Using PCI Geomatica and Their Morphotectonic Interpretation in the Parts of Northwestern Himalayan Frontal Thrust. Journal of the Indian Society of Remote Sensing. 47 (5): 809–820.
[6]. Sadek, M.F. and Hasan, S.M. (2012). Application of remote sensing in lithological discrimination and geological mapping of precambrian basement rocks in the eastern desert of Egypt. 33rd Asian Conference on Remote Sensing 2012, ACRS 2012. 1:362–371.
[7]. Sabins, F.F. (1997).“Remote Sensing principles and interpretation,” W. H. Free. Company, New York, pp. 366–371.
[8]. Qari, M.H.T., Madani, A.A., Matsah, M.I.M., and Hamimi, Z. (2008). “Utilization of Aster and Landsat Data in Geologic Mapping of Basement Rocks of Arafat Area, Saudi Arabia.” Arabian Journal for Science and Engineering. 33 (1 C): 99–116.
[9]. Amusuk, D.J., Hashim, M., Pour, A.B., and Musa, S.I. (2016). Utilization of landsat-8 data for lithological mapping of basement rocks of plateau state north central Nigeria. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives. 42 (4W1): 335–337.
[10]. Abdeen, M., Thurmond, A.K., Abdelsalam, M., and Stern, B. (2001). Application of ASTER band-ratio images for geological mapping in arid regions; The Neoproterozoic Allaqi Suture. Egypt. Geol. Soc. Am. 33:1–289.
[11]. Fowler, A., Baghdady, A., Abdelmalik, K., and Gad, A. (2020). Remote sensing-guided stratigraphic dissection of an Ediacaran terrestrial molasse basin (Kareim basin, Egypt), with implications for sedimentary evolution. Precambrian Research. 338:105589.
[12]. Gad, S. and Kusky, T. (2006). Lithological mapping in the Eastern Desert of Egypt, the Barramiya area, using Landsat thematic mapper (TM). Journal of African Earth Sciences. 44 (2): 196–202.
[13]. Hamimi, Z., Hagag, W., Kamh, S., and El-Araby, A. (2020). Application of remote-sensing techniques in geological and structural mapping of Atalla Shear Zone and Environs, Central Eastern Desert, Egypt. Arabian Journal of Geosciences. 13 (11).
[14]. Hassan, S.M. and Sadek, M.F. (2017). Geological mapping and spectral based classification of basement rocks using remote sensing data analysis: The Korbiai-Gerf nappe complex, South Eastern Desert, Egypt. Journal of African Earth Sciences. 134(July):404–418.
[15]. Kamel, M., Youssef, M., Hassan, M., and Bagash, F. (2016). Utilization of ETM+ Landsat data in geologic mapping of wadi Ghadir-Gabal Zabara area, Central Eastern Desert, Egypt. Egyptian Journal of Remote Sensing and Space Science. 19 (2): 343–360.
[16]. Seleim, A.M. and Hammed, M.S. (2016). Applications of remote sensing in lithological mapping of east esh el malaha area, southwest gulf of suez - egypt. International Journal of Scientific & Engineering Research. 7 (12): 691–701.
[17]. Abd El-Fatah, A.A.E., Madani, A.A., Surour, A.A.A., and Azer, M.K. (2023). Integration of Landsat-8 and Reflectance Spectroscopy data for Mapping of Late Neoproterozoic Igneous Ring Complexes in an Arid Environment :a Case Study of Gebel El-Bakriyah Area, Eastern Desert, Egypt. 14 (1): 13–31.
[18]. Ali-Bik, M. W., Sadek, M. F., and Hassan, S. M. (2022). Basement rocks around the eastern sector of baranis-aswan road, Egypt: Remote sensing data analysis and petrology. Egyptian Journal of Remote Sensing and Space Science. 25 (1): 113–124.
[19]. Qasim, M. Khan, S. D. Haider, R., and Rasheed M. (2022). Integration of multispectral and hyperspectral remote sensing data for lithological mapping in Zhob Ophiolite, Western Pakistan, Arabian Journal of Geosciences. 15 (7): 1–19.
[20]. Anwar, M., Abu El-Leil, I., and Salem, S.M. (2023). Lithological and Alteration Mapping at the Um El-Rus Area, Central Eastern Desert, Egypt, Using Remote Sensing Techniques’, Journal of the Indian Society of Remote Sensing, 0123456789.
[21]. Hammed, M. S. and Abdel Khalek, A. (2015). Section Name. 15th International SGEM GeoConference. I: 11–22.
[22]. Hammam, A., Gaber, A., Abdelwahed, M., and Hammed, M. S. (2020). Geological mapping of the Central Cairo-Suez District of Egypt, using space-borne optical and radar dataset. Egyptian Journal of Remote Sensing and Space Science. 23 (3): 275–285.
[23]. Sayed, F., Hammed, M.S., Shided, A.G., and Hussein, A.W. (2023). Implementation of the remote sensing techniques in the structural and lithological mapping of the northwestern margin of the Red Sea , Egypt, Journal of Mining and Environment, in press.
[24]. Stern, R.J. (1994). Arc assembly and continental collision in the Neoproterozoic East African Orogen: implications for the consolidation of Gondwanaland. Annual Review of Earth & Planetary Sciences. 22: 319–351.
[25]. Abdeen, M.M. and Greiling, R.O. (2005). A quantitative structural study of late Pan-African compressional deformation in the Central Eastern Desert (Egypt) during Gondwana assembly. Gondwana Research. 8 (4): 457–471.
[26]. Johnson, P.R., Andresen, A., Collins, A. S., Fowler, A.R., Fritz, H., Ghebreab, W., Kusky, T., and Stern, R.J. (2011). Late Cryogenian-Ediacaran history of the Arabian-Nubian Shield: A review of depositional, plutonic, structural, and tectonic events in the closing stages of the northern East African Orogen. Journal of African Earth Sciences. 61 (3): 167–232.
[27].Johnson, P. and Woldehaimanot, B. (2003). Development of the Arabian-Nubian Shield: Perspectives on accretion and deformation in the northern East African Orogen and the assembly of Gondwana. Geological Society, London, Special Publications. 206: 289–325.
[28]. Abd El-Rahman, Y., Polat, A., Fryer, B. J., Dilek, Y., El-Sharkawy, M., and Sakran, S. (2010). The provenance and tectonic setting of the Neoproterozoic Um Hassa Greywacke Member, Wadi Hammamat area, Egypt: Evidence from petrography and geochemistry. Journal of African Earth Sciences. 58 (2): 185–196.
[29]. El-Gameel, K. (2018). The Ediacaran volcanosedimentary succession of Gabal Abu Had, North Eastern Desert, Egypt: geological study, facies analyses, and depositional setting. Arabian Journal of Geosciences. 11(8).
[30]. Eliwa, H.A., Kimura, J.I., and Itaya, T. (2006). Late Neoproterozoic Dokhan Volcanics, North Eastern Desert, Egypt: Geochemistry and petrogenesis. Precambrian Research. 151 (1–2): 31–52.
[31]. Willis, K.M., Stern, R.J., and Clauer, N. (1988). Age and geochemistry of late precambrian sediments of the hammamat series from the Northeastern desert of Egypt. Precambrian Research. 42 (1–2): 173–187.
[32]. Stern, R.J., Gottfried, D., and Hedge, C.E. (1984). Late Precambrian rifting and crustal evolution in the Northeastern Desert of Egypt. Geology. 12 (3): 168–172.
[33]. Eliwa, H. Breitkreuz, C., Khalaf, I., and El Gameel, K. (2010). Depositional styles of Early Ediacaran terrestrial volcanosedimentary succession in Gebel El Urf area, North Eastern Desert, Egypt. J. African Earth Sci. 57 (4): 328–344.
[34]. Conoco, (1987). Egyptian General Authority for Petroleum (UNESCO Joint Map Project), 20 Sheets, Scale 1500 000, Cairo.
[35]. Dardir, A.A. and Abu Zeid, K. (1972). Geology of the basement rocks between latitudes 27° 00 and 27 30° N, Eastern Desert. Annual Geology Survey. 2:129–158.
[36]. El Ramly, M.F. (1972). A new geological map for the basement rocks in the Eastern and South- Western deserts of Egypt, scale 1:1,000,000. Annual Geology Survey. 2:1–8.
[37]. Ghobrial, M.G. and Lotfi, M. (1967). The Geology of Gebel Gattar and Gebel Dokhan Areas. Geological Survey of Egypt. 40.
[38]. EGSMA (2002). Geologic Map of Marsa Sha`ab Quadrangle, Egypt, Scale 1:250.000.
[39]. Greenberg, J.K. (1981). Characteristics and origin of Egyptian Younger Granites. Bulletin of the Geological Society of America. 92(5 PART2): 749–840.
[40]. Ghoneim, M.F., Lebda, E.M., Abu Anbar, M.M., and Abd El-Wahed, M.A. (2007). Toward a New Concept for the Classification of Granitic Rocks of the Eastern Desert, Egypt: Geothermobarometry Constraints. The Fifth International Conference on the Geology of Africa. 142 (1): 131–142.
[41]. Frost, B.R., Barnes, C.G., Collins, W.J., Arculus, R.J., Ellis, D.J., and Frost, C.D. (2001). A geochemical classification for granitic rocks. Journal of Petrology. 42 (11): 2033–2048.
[42]. El-Sayed, M.M., Mohamed, F.H., Furnes, H., and Kanisawa, S. (2002). Geochemistry and petrogenesis of the neoproterozoic granitoids in the central Eastern Desert, Egypt. Chemie Der Erde. 62 (4): 317–346.
[43]. El-Naby, H.H.A. (2021). The Egyptian Granitoids: an up-to-date Synopsis (Z. Hamimi et al. (Ed.); Issue September). The Geology of the Egyptian Nubian Shield, Regional Geology Reviews Springer Nature Switzerland.
[44]. Noweir, A.M., Sewifi, B.M., and Abu El Ela, A.M. (1990). Geology, petrography, geochemistry and petrogenesis of the Egyptian younger granites. Qatar University Science Bulletin. 10:363 – 393.
[45]. Wilde, S.A. and Youssef, K. (2002). A re-evaluation of the origin and setting of the late precambrian Hammamat group based on SHRIMP U-Pb dating of detrital zircons from Gebel Umm Tawat, north eastern Desert, Egypt. Journal of the Geological Society. 159 (5): 595–604.
[46]. Akaad, M. and Noweir, A.M. (1969). Lithostratigraphy of the Hammamat-Um Seleimat district, Eastern Desert, Egypt. Nature. 223:284–285.
[47]. Dessouky, O.K., Dardier, A.M., and Abdel Ghani, I.M. (2019). Egyptian Hammamat molasse basins and their relations to arc collision stages: Implications for radioactive elements mineralization potential. Geological Journal. 54 (3): 1205–1222.
[48]. Khalifa, A.A., Khamis, H.A., El-Sayed, M.M., and Shalaby, M.H. (2020). Geology and evolutionary stages of the Late Precambrian Hammamat sediments at Gebel Um Tawat, North Eastern Desert, Egypt. Arabian Journal of Geosciences. 13 (12): 1–19.
[49]. Yousefi, M. and Hronsky, J.M.A. (2023) ‘Translation of the function of hydrothermal mineralization-related focused fluid flux into a mappable exploration criterion for mineral exploration targeting’, Applied Geochemistry, 149.
[50]. Stern, R.J., Sellers, G., and Gottfried, D. (1988). Bimodal dike swarms in the North Eastern Desert of Egypt: significance for the origin of late Precambrian “A - type” granites in northern Afro -Arabia. In: El Gaby S, Greiling RO (eds) The Pan-African belt of Northeast Africa and Adjacent Areas, Vieweg, p (E. G. S & G. RO (eds.)). The Pan-African belt of Northeast Africa and Adjacent Areas, Vieweg.
[51]. Beyth, M., Eyal, Y., and Garfunkel, Z. (2014). The geology of the northern tip of the Arabian-Nubian shield. Journal of African Earth Sciences. 99 (PA2):332–341.
[52]. Stern, R.J., Gottfried, D., and Hedge, C.E. (1984). Late Precambrian rifting and crustal evolution in the Northeastern Desert of Egypt. Geology. 12(3):168–172.
[51]. Liu, J.G. and Mason, P.J. (2016). Image Processing and GIS for Remote Sensing: Techniques and Applications. John Wiley and Sons, Ltd; Chichester, UK: Inverse distance weighted average.
[53]. Wolters, J., Goldin, L., Watts, D. R., and Harris, N. B. W. (2005). Remote sensing of gneiss domes and granite in southern Tibet /. Geol Soci Am(Abstr Program). 37 (5): 93.
[54]. Richards, J.A. and Jia, X. (1999). Remote Sensing Digital Image Analysis. In Remote Sensing Digital Image Analysis.
[55]. CCRS. (1999). Canada Center of Remote Sensing, Fundamentals of Remote Sensing, Forestry.
[56]. Chen, S. and Rao, P. (2009). Regional land degradation mapping using MODIS data and decision tree (DT) classification in a transition zone between grassland and cropland of northeast China. Information Science and Engineering (ICISE),1st International Conference on. IEEE.
[57]. Solomon, S. and Ghebreab, W. (2006). Lineament characterization and their tectonic significance using Landsat TM data and field studies in the central highlands of Eritrea. Journal of African Earth Sciences. 46 (4): 371–378.
[58]. Adhab, S.S. (2019). Lineament automatic extraction analysis for Galal Badra river basin using Landsat 8 satellite image. Iraqi Journal of Physics. 12 (25): 44–55.
[59]. Ahmadi, H. and Pekkan, E. (2021). Fault-based geological lineaments extraction using remote sensing and gis—a review. Geosciences (Switzerland). 11 (5).
[60]. Hung, L. Q., Batelaan, O., and De Smedt, F. (2005). Lineament extraction and analysis, comparison of LANDSAT ETM and ASTER imagery. Case study: Suoimuoi tropical karst catchment, Vietnam. Remote Sensing for Environmental Monitoring, GIS Applications, and Geology.
[61]. Mah, A., Taylor, G. R., and Balia, L. (1995). Lineament anlysis of Landsat Thematic Mapper images, Northern Territory, Australia. 61 (6): 761–773.
[62]. Goetz, A.F.H. and Rowan, L.C. (1981). Geologic Remote Sensing. Science. 211(4484):781–791.
[63]. El-Kammar, A.M., Salman, A.E., Shalaby, M.H., and Mahdy, A.I. (2001). Geochemical and genetical constraints on rare metals mineralization at the central Eastern Desert of Egypt. Geochemical Journal. 35 (2): 117–135.
[64]. Salman, A.B., Shalaby, M.H., Ragab, M.M., and AbuZaid, A. (1996). Relation Between Uranium Mineralization and Structural Features, Gebel Gattar, North Eastern Desert, Egypt. Nuclear Material Authority. 9–13.